30. In class we saw why that the first version of SSL in Netscape was insecure. Briefly explain why. (The full exact details are not required) 31. A cryptographically secure pseudorandom bit generator (CSPRBG) should have two addi- tional properties compared to a typical PRBG. Briefly, explain the following two properties. a) next-bit test b) forward security 32. The Blum-Blum-Shub PRBG is as follows o) choose random primes p,q with p, q3 mod 4 o) let N = pq o) choose random seed zo, such that 201.0 and gcd(Zo, N)-1 o) compute 2i+1 as mod N o) i-th output bit is 1 if , is odd 0 if is even a) why is this not used in practice? b) why is it considered secure? 30. In class we saw why that the first version of SSL in Netscape was insecure. Briefly explain why. (The full exact details are not required) 31. A cryptographically secure pseudorandom bit generator (CSPRBG) should have two addi- tional properties compared to a typical PRBG. Briefly, explain the following two properties. a) next-bit test b) forward security 32. The Blum-Blum-Shub PRBG is as follows o) choose random primes p,q with p, q3 mod 4 o) let N = pq o) choose random seed zo, such that 201.0 and gcd(Zo, N)-1 o) compute 2i+1 as mod N o) i-th output bit is 1 if , is odd 0 if is even a) why is this not used in practice? b) why is it considered secure